This glass straw, made of durable borosilicate glass construction, is 8" long (so on the shorter side, working great with our collins glasses) and 9.5mm diameter which is great for fluids like tea, orange juice, hurricanes, long islands, etc. Earth friendly solution to plastic throw away straws which require recycling through a facility... or, a reusable straw that you can clean like any other utensil or glassware and use forever. You decide.